Android Oreo 8.1 ROM, LineageOS 15.1 for Galaxy S2 has now arrived via a development build. If you want the OFFICIAL LineageOS update or some more Android Oreo ROMs then stay tuned to the Lineage OS 15 ROMs page or the AOSP Android Oreo list page. This LineageOS 15.1 for Galaxy S2 (i9100) is brought to you by developer rINanDO.

DONATION TO DEVELOPER:

No donation link found for rINanDO.

DISCLAIMER:THIS IS AN INITIAL BUILD AND HIGHLY UNSTABLE. HAVE A BACKUP BEFORE FLASHING THIS ROM AND TRY AT YOUR OWN RISK. Installing a custom ROM on a Galaxy S2 (i9100) requires an unlocked bootloader on the Galaxy S2 (i9100), which may VOID your warranty and may delete all your data. Before proceeding further you may consider backup all data on the phone. You are the only person doing changes to your phone and I cannot be held responsible for the mistakes done by you.

Root binary is NOT inbuilt in Lineage OS 15.1, so you may need a separate SuperSu package or LineageOS su binary to install to gain ROOT access. Here is Lineage OS Rooting guide If there is no in-built ROOT or it does not work for some reason then you can try SuperSU rooting guide to enable ROOT access.

Follow this if you are flashing LineageOS 15.1 for Galaxy S2 for the first time, or coming from another ROM:

Points to NOTE: – Try to avoid restoring apps backup using Titanium Backup. It may break things up. – Don’t restore system data using Titanium Backup! It will definitely break the current installation. – It is also discouraged to Restoring Apps + Data using Titanium Backup.

Boot into Recovery. Make sure to have a Custom recovery like CWM or TWRP or any other custom recovery. If not then follow the Custom Recovery Installation Guide for Galaxy S2 (it’s a generic guide which will work for TWRP as well as CWM recovery or any other recovery)

Complete the initial setup and enjoy Android Oreo 8.1 with Lineage OS 15.1 for Galaxy S2. After the installation of LineageOS 15.1 for Galaxy S2 you may want to enable ROOT access on your phone and here is how you can do that:How to Enable ROOT on LineageOS 15.1.

Stay tuned or Subscribe to the Galaxy S2 (i9100) LineageOS forum For other Android Oreo, Nougat ROMs, LineageOS 15.1 ROMs, other ROMs and all other device specific topics.

If you have any BUGs or any issues to report on this ROM then here is the dev thread for this ROM.